70819513844 has 12 divisors (see below), whose sum is σ = 124123945764. Its totient is φ = 35355529344.

The previous prime is 70819513819. The next prime is 70819513847. The reversal of 70819513844 is 44831591807.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15023404900 + 55796108944 = 122570^2 + 236212^2 .

It is a super-2 number, since 2×70819513844² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70819513792 and 70819513801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70819513847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13553957 + ... + 13559180.

It is an arithmetic number, because the mean of its divisors is an integer number (10343662147).

Almost surely, 2^70819513844 is an apocalyptic number.

It is an amenable number.

70819513844 is a deficient number, since it is larger than the sum of its proper divisors (53304431920).

70819513844 is a wasteful number, since it uses less digits than its factorization.

70819513844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27113794 (or 27113792 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 70819513844 in words is "seventy billion, eight hundred nineteen million, five hundred thirteen thousand, eight hundred forty-four".